Swingletree.



PATBNTED JAN. 9, 19o6.

J. A. BUCHANAN. SWINGLETREB.

APPLICATION FILED NOV. 10, 1904.d

n I INVENTOR a. 1cm-.cfu Cmq, Any-5 'UNITED STATES PATENT OFFICE.

JOHN A. BUCHANAN, OF PITTSBURG, PENNSYLVANIA.

SWINGLETREE.

To n/Z, whmn, it nza/y concern:

Be it known that I, JOHN A. BUCHANAN, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Swingletrees, 8:0., of which improvements the following is a s ecification.

The invention escribed herein relates to certain improvements in swingletrees, doubletrees, neck-yokes, 8:6., and these several devices will hereinafter be referred to generically as trees.

The invention has for its obj ect a construction in which the body of the article is formed of metal sheets so bent as to present an eicieit resistance both horizontally and vertica y.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a lan view of my improved swingletree, &c. igs. 2 and 3 are transverse sections on planes indicated, respectively, by the lines II II and III III, Fig. l.

In the practice of my invention the body 1 of the article is formed of a single sheet of metal bent to substantially tubular form in cross-section. The sheet from which the body is formed is preferably made tapering from points adjacent to but on opposite sides of the middle of the blank toward both ends, so that the body when formed b bending the sheet longitudinall will be simi arly tapered. The edges of the s eet are sobent that when the sheet has been bent to tubular form these edges will form inwardly-projecting radial fianges 2, which will present a highly eicient brace along the rear wall of the body, as a ainst horizontal transverse bending strains. T ie front wall of the body of the article is strengthened as against horizontal and vertical transverse strains by a series of longitudinal ribs 3 and 4, projecting alternately in opposite directions, as clearly shown in Figs. 2 and 3. These ribs are conveniently formed by longitudinally corrugating or o positely bending the middle portion of tlie sheet either before it is bent to tubular form or while bending the sheet to such form.

The body is held in its tubular form, with the flanges 2 bearing one against the other, by the clips or fittings, which are referably formed of malleable cast-iron. T e middle Specification of Letters Patent.

Application filed November 10, 1904. Serial No. 232,189.

Patented Jan. 9, 1906.

fitting 5 is rovided on-its ends with lugs 6, through which pass the bolts or rivets, whereby the fitting 1s clamped around the body, and with lugs 7, having holes or openings 8 for the reception of suitable connecting members or parts. The end fittings or clips consist of straps 9, bent around the ends of the body and provided with lugs or ears l0, through which pass rivets or bolts securing the straps in posltion. The parts or members 11, to which the traces, &c., are connected, are U or staple sha e, having at their ends laterally-extending ugs 12, forming journals for the U or staple shaped members. These lugs or journals are arranged in the longitudinal groove between the strengthening-ribs 3 and are held in osition by the stra s, which form bearings or the journals. t is preferred that these journals should extend outwardly, as shown, and in such case a slot or o ening is formed in the strap to permit of t e passage of the body of the U -shaped -rnember when applying it to the body 1 of the article. Thls construction permits the easy renewal of the U-shaped part or member, which is worn out ra idly in use.

The sides, especially the under side of the middle fitting or clip, are made thick and at, as it forms a bearing when the swingletree or doubletree is secured in position by a pin 13, as shown. When such pin is employed, the lu s or ears 7 may be omitted.

claim herein as my invention- 1. A tree or means for attaching horses to wagons, having along one edge inwardly-projectin flanges and with ribs along its,o posite e ge, said ribs projecting alternate y in opposite directions, substantiall as set forth.

2. A hollow tree or means or attaching horses to wagons having flat or approximately flat sides and provided with ribs along one edge in combination with an attaching U shaped part or member rovided with journals projecting between a jacent ribs on the tree and a strap surrounding the tree and provided with bearings for said journals, substantiall as set forth.

3. A ollow tree or means for attaching horses` to wagons having flat or approximately flat sides and provided with ribs along one edge in combination with an attaching U-shaped part or member having outwardlyprojecting journals projecting between adj acent ribs on the tree and a strap surroundin the tree and provided with bearings for sai IOO IIO

Correction in Letters Patent No. 809,769.

journals and having an opening or slot for the projection of the body or U-shaped part therethrough, substantially as set forth.

4. A tree or means for attaching horses to Wagons having a groove along its front edge, a s otted strap surrounding the tree, a U- shaped art or member projecting through the slot 1n the strap and having journals .arranged in the groove in the tree and bearing on the ortions of the strap forming the sides of the s ot, substantially as set forth.

5. A hollow tree or means for attaching horses to Wagons having flat or approximately flat sides, and provided along one edge with a series of longitudinal ribs proj ecting alternately in opposite directions, the outer Walls of the outer ribs being in the planes of the Hat sides of the tree.

In testimony whereof I have hereunto set my hand.

JOHN A. BUCHANAN. Witnesses:

CHARLES BARNETT, DARWIN S. VVoLooTT.

It is hereby eertied that in Letters Patent No. 809,769, granted January 9, 1906,

upon the application of John A. Buchanan,

of Pittsburg, Pennsylvania, the title of the invention should read /S'ngletree instead of Swingletree, and Wherever the word Swingletree appears throughout the specification it should be read Singletree; and

that the said Letters Patent should be read with this correction therein that the same may conform to the record of the oase in the Patent Olce. Signed and sealed this 30th day of January, A. D., 1906.

my auf l i l I ,i [SEAL] l F. I. ALLEN,

Commissioner of Patents.

Correction in Letters Patent No. 809,769.

journals and having an opening or slot for the projection of the body or U-shaped part therethrough, substantially as set forth.

4. A tree or means for attaching horses to Wagons having a groove along its front edge, a s otted strap surrounding the tree, a U- shaped art or member projecting through the slot 1n the strap and having journals .arranged in the groove in the tree and bearing on the ortions of the strap forming the sides of the s ot, substantially as set forth.

5. A hollow tree or means for attaching horses to Wagons having flat or approximately flat sides, and provided along one edge with a series of longitudinal ribs proj ecting alternately in opposite directions, the outer Walls of the outer ribs being in the planes of the Hat sides of the tree.

In testimony whereof I have hereunto set my hand.

JOHN A. BUCHANAN. Witnesses:

CHARLES BARNETT, DARWIN S. VVoLooTT.

It is hereby eertied that in Letters Patent No. 809,769, granted January 9, 1906,

upon the application of John A. Buchanan,

of Pittsburg, Pennsylvania, the title of the invention should read /S'ngletree instead of Swingletree, and Wherever the word Swingletree appears throughout the specification it should be read Singletree; and

that the said Letters Patent should be read with this correction therein that the same may conform to the record of the oase in the Patent Olce. Signed and sealed this 30th day of January, A. D., 1906.

my auf l i l I ,i [SEAL] l F. I. ALLEN,

Commissioner of Patents.

Correction in Letters Patent No. 809,769.

It is hereby certied that in Letters P upon the appli bhe invention s Swingletree that the said L may Conform L0 the record of the case Signed and sealed this 30rd] day of January, A. D.,

[SEA

cation of John A. Buchanan.

huuld read Singletreff instead 0I" Swingletrem tent` N0. 809,769, granted January 9, 1906.

0ll Pittshurg, Pennsylvania, bhv title of and wherever the word appears throughout the specicatinn it should he read Singletreff; and

amers Patient should he, read with this cnrrectinn therein that the @L7 ai.'

Esame in they Patent; Officv.

l". AIJIJICN,

Commissioner of Iaents. 

